Shoe-calk sharpener



J. BORLAND.

Shofe-Calk Sharpener.

Patented June 22, 1880.

.HZZesg may@ 5 LN2 -substantially as shown.

` UNITED STATES PATENT OFFICE.

JOSEPH BORLAND, OF MARS P. O., PENNSYLVANIA.

SHOE-CALK SHARPENER.

SPECIFICATION forming part of Letters Patent No. 228,975, dated June 22,1880.

Application filed February 3, 1880.

To all whom it may concern:

Be it known that I, JosEPH BOELAND, of Mars P. O., in the county ofButler and State of Pennsylvania, have invented an Improved Device forSharpening the Galks of Horse and 0x Shoes; and I dq hereby declare thefollowing to be afull, clear, and exact description of the same,reference being had to the accompanying drawings, forming part of thisspecification, in which- Figure l is a side elevation; Fig. 2, abottom-plan view, and Fig. 3 an end elevation.

Similar letters of reference in the several gures denote the same parts.

The object of this invention is to provide, `for the use of farmers andother persons whose business requires the use of horse and ox teams andto whom a blacksmith shop is not readily accessible, a simple andconvenient instrument whereby 'they can themselves at any time, withoutdelay, sharpen the calks of the shoes of their horses or oxen, andthereby save the time, labor, expense, and interruption of theirbusiness heretofore necessary inl such cases.

To this end the invention consists in an instrument constructed as Iwill now proceed to describe. l,

In the drawings, A represents an arched frame, constructed in twopieces, a ct, jointed together at the point a2 at the apex of the arch.The movable ends of this frame are connected by a straining-rod, B,which passes through holes in the frame, and is secured by a head, b, onone end and a screw-nut, b', on the other,

Below the strainingrod two triangular openings or recesses, m m, aremade in each end of the frame, and two files, c c', preferablytriangular in cross-section, are secured and tremities therein.

held by inserting their ex- 'Ihe two files lie parallel to each other,preferably with a narrow space between their proximate corners for theescape of the metal filings, and being triangular or of such otherprismatic form that different working-faces can be presented by turningor reversing them, they can be at any time adjusted so as to presentfresh unworn faces for the perform ance of the Work.

Ordinary triangular files, such as are in common use and well known inthe market, can be applied and used in connection with this instrumentwithout the necessity of any special construction therefor.

The mode of inserting, removing, and adjusting the files will beunderstood from the drawings without further description.

In the use of the instrument the proximate faces of the files c o arebrought to bear against the sides of the calli and the instrument movedrapidly back and forth by the operator. As the files act simultaneouslyupon both sides of the calk, the point or edge of the latter is v-eryquickly brought to the requisite degree of sharpness.

Having thus described my invention, I claim as new- The calk-sharpenerherein described, consisting of the jointed frame A, the two files o c',held in the ends of said frame parallel to each other and with anangular space between them, the straining-rod B, and screw-nut b',substantially as described.

JOSEP FI BORLAND.

Witnesses:

AARON McCLINTocK, JOHN Ross.

